irwin



2 Sheets-Sheet- I. O. H. IRWIN, F; MILL & J. E. HITCH. BORING MACHINE.

No. 427,325. Patented May 6, 1890.

(No Model.)

(N0 Mod'el. I 2 Shets-Sheet 2.

o. H. IRWIN, F. MILL & JJE. HITCH. BORING MACHINE.

No. 427,325. I Patented May 6, 1890.

A TTOHNE rs UNITED STATES PATENT ()FFICE.

CHARLES H. IRWIN, FRIEDERICH MILL, AND JOHN ETIIITCH, OF VVILMING- TON, OHIO; SAID MILL AND HITCH ASSIGNORS TO SAID IRWIN.

'BORING-MACHINE.

SPECIFIGATION forming part of Letters Patent No. 427,325, dated May 6, 1890. Application filed December 28, 1889. Serial No. 335,218. (No model.)

ToaZZ whom, it may concern: D, provided with the notched disks D D,

Be it known that we, CHARLES H. IRWIN, adapted to engage withtheir notches corre- FRIEDERICH MILL, and JOHN E. HITCH, all of sponding notches in the disks B B, formed 011 \Yilmington, in the county of Clinton and the standards B B. The disksD D support State of Ohio, have invented a new and 1111- posts E E, connected with each otherby suitproved Boring-Machine, of which the followable cross-bars E, so as to form a frame ing is a full, clear, and exact description. which can be swung in any desired angle by The object of the invention is to provide a loosening the nut C of the bolt C, so thatthe new and improved boring-machine which is notched disks D can pass the notches in the to simple and durable in construction, very efdisks B until the desired inclined position fective in operation, and permits of quickly of the frame is reached. hen the desired changing the speed, so as to run the machine position is obtained, the nut C is again slow when a large augeris used and to run it screwed up, so as to draw the notched disks fast when a small auger is used. B on the standards B B firmly into the I 5 The invention consists of a shaft mounted notches of the disks D, thus locking the latto be shifted and carrying two gear-wheels ter in place to hold the posts E in the deand a second shaft carrying'two gear-wheels sired inclined position. adapted to be thrown alternately in contact On the front of the posts E is held to slide with the said first-named gear-wheels by up and down a frame F, provided with guid- 2o shifting one of the said shafts,so as to change ing-lugs F, engaging guidinggrooves E the speed of the machine. formed on the said posts E. (See Fig. 3.) The The invention also consists of certain parts frame F is provided with the bearings F and and details and combinations of the same, as F in which is mounted to turn the horizonwill be hereinafter fully described, and then tally-extending shaft G, also adapted to slide 25 pointed out in the claims. in the said bearings in order to change the Reference is to be had to the accompanying speed of the machine, as hereinafter more drawings, forming a part of this specification, fully described. in which similar letters of reference indicate On the ends of the shaft G are secured the corresponding parts in all the figures. crank-arms G and G preferably arranged to 0 Figure 1 is a front view of the improveextend in. opposite directions, as is plainly 8o ment with parts of the frame broken out. shown in Fig. 1. \Vhen the shaft Ghas been Fig. 2 isa side elevation of the same. Fig. 3 shifted into the desired position to the right is an enlarged sectional plan view of the imor left, the shaft is locked in place to prevent provement on the line 00 0c of Fig. 1. Fig. i a displacement, but to permit of turning it 35 is a side elevation of a locking-latch for the by means of latches H and H, pivoted on the shaft. Fig. 5 is an enlarged sectional front bearings F and F respectively, and adapted view of part of the improvement on the line to be thrown between the hub of the crank- 1 'J of Fig. 2. Fig. 6 is an enlarged planview arms G and G and the outer ends of the of one ofthe gear-wheels. Fig. 7 is a face bearings F and F respectively. When one 40 view of one of the clutch gear-wheels. Fig. of the latches is disengaged from the shaft, 8 is an enlarged sectional side elevation of a then the other is adapted to engage the shaft, modified form of part of the improvement. and vice versa. Fig. 9 is a front view of one of the clutch- As shown in Fig. 1, the latch II is disenwheels for the said modified form, and Fig. gaged and the shaft G is shifted into its po- 10 is a side elevation of the locking-latch for sition to the left, the latch H engaging the 5 one of the shafts. shaft between the hub of the handle G and The improved boring-machine is provided the bearing F, thus preventing the shifting with a suitably-constructed base A, on which of the shaft G to the right. WVhen the latch are secured the standards B B, supporting a II is thrown out of contact with the shaft G, 50 bolt C, on which is mounted to turn a sleeve the latter can be shifted to the right, and then the latch H thrown in gear with the shaft G to prevent the movement of the latter to the left.

On the shaft G, near its middle, is secured a bevel gear-wheel I, adapted to mesh into a bevel gear-Wheel J when the shaft G is in its left-hand position, as shown in Figs. 1 and 5. The gear-wheel J is fastened on the upper end of the shaftK, mounted to turn in a bearing F of .the frame F, and carrying at its lower end a chuck L, supporting the auger N, preferably of the construction shown and described in Letters Patent numbered 306,907, granted to Charles H. Irwin October 21, 1884. On the face of the bevel gear-wheel I are formed clutch-teeth I, adapted to engage I similar clutch-teeth N,formed 011 one face of the bevel gearwheel N, mounted to turn loosely on the shaft G between the bevel gear-wheel I and the bearing F The loose be'vel gear-wheel N is always in mesh with a large bevel gear-wheel 0, formed integral with the bevel gear-wheel J, so as to turn with the latter the shaft K.

\Vhen the machine is in the position shown in Figs. 1, 2, 3, and 5 and the shaft G is revolved by the operator turning the crank-arms G and G then the small bevel gear-wheel I, meshing into the small bevel gear-wheel J, turns the shaft K at a high rate of speed to drill small holes with angers of small diameter. Now when the operator desires to use a large anger the speed of the machine must necessarily be reduced. For this purpose the latch II is disengaged from the shaft G, the latter is shifted to the right, and the latch H is placed into contact with the shaft G to lock the latterin its right-hand position. The

shifting of the shaft G from the left to the right moves the clutch-teeth of the gear-wheel 1 into engagement of the clutch-teeth N of the smaller gear-wheel N, so that when the shaft is now rotated the gear-wheel N rotates with the said shaft, as it is coupled to the gear-Wheel I. The latter, by shifting the shaft G to the right, is disengaged from the smaller bevel gear-wheel J, and now on turning the shaft G its motion is transmitted by means of the gear-wheel N to the large bevel gearwheel 0, secured on the shaft K, which is thus turned at a low rate of speed. Thus by simply shifting the shaft G a fast or a slow motion can be given to the shaft K during the same number of revolutions imparted to the shaft G. WVhen the aperture is bored by 1he auger N and the operator desires to withdraw the auger, the following device is used to quickly raise the frame F to move the auger out of the aperture: On the bevel gearwheel N is formed a spu r-wheel N adapted to be engaged by a rack P, mounted to slide on one of the posts E, so as to engage and disengage the said spur-wheel N Whenever desired. The rack P is provided ncarits upper end with an inclined slot P, engaging a bolt Q, held 011 the respective post E. On the lower end a similar arrangement may be made,

or a pin P may be secured to the rack P to engage the slot E, formed in the respective post E and inclined similarly to the slot P. On the extreme lower end of the rack P is arranged a forwardly-inclined arm P passing through a keeper R and provided with a hook- P, adapted to engage the top of the keeper R when the rack P is moved upward, so as to slide rearward out of contact with the spur-wheel N and then the hook P rests on top of the keeper R and locks the rack P in position-that is, out of contact with the spurwheel N Then the operator desires to move the frame F upward after the hole is drilled, the rack P is swung downward and outward by the operator disengaging the hook P from the keeper R and permitting the rack to slide downward and outward in mesh with the spur-wheel N The operator then, turning the shaft G in the reverse direction, causes the said spur-wheel N 2 to travel upward on the rack P, thus raising the frame and shifting the auger N out of the drill-hole.

It will be seen that in order to change the machine from a slow to a fast motion, or vice versa, it is necessary to shift one of the shafts. This can also be accomplished as shown in Figs. 8, 9, and 10, in which the shaft G is mounted to turn, but not to slide, and the bevel gear-wheel N is formed integral with the gearvheel I, secured on the shaft G. The bevel gear-wheel J is not formed integral with the gear-wheel 0, but is provided with clutch-teeth J adapted to engage correspondloosely on the hub of the gear-wheel J, while said gear-wheel J is fastened on the shaft K and rests on the sleeve J, held to slide vertically in the bearing F. A pin S projects from the sleeve J through a slot F in the bearing F and this pin is adapted to be locked in an uppermost position by a latch S, so as to hold the sleeve J in an uppermost position and the gear-wheel J in mesh with the gear-wheel I. The gear-wheels J and O are thus disconnected, and the gear-wheel O rotates loosely when the shaft G is turned. A fast motion is thus imparted to the shaft K, as the motion of the shaft G is transmitted by the gear-wheel I to the gear-wheel J on the said shaft K. hen the latch S is thrown over the pin S, the sleeve J and the gear-wheel J are permitted to slide downward, so that the clutch-teeth J engage the clutchteeth 0 of the gear-wheel O, at the same time disengaging the gear-Wheel J from the gear-wheel I. Motion is now transmitted from the gear-wheel N to the gear-wheel O, which, being locked to the gear-wheel J, imparts a slow motion to the shaft K. This construction is similar to the one above described and is for the same purpose. Thus it will be seen that by a simple movement the speed of the machine can be quickly changed accord ing to the size of the gear used, and the auger can be quickly withdrawn from the hole.

Having thus fully described our invention, we claim as new and desire to secure by Letters Patent 1. In a boring-machine, the combination, with a shaft mounted to turn and to be shifted lengthwise and two gear-wheels, of which one is fastened and the other is loose on the shaft, of a second shaft mounted to turn and carrying two integral gear-wheels adapted to engage the said fast and loose gear-wheels, substantially as shown and described.

2. In a boring-machine, the combination, with a shaft mounted to turn and to be shifted lengthwise and two gear-wheels, of which one is fastened and the other is loose, of a second shaft mounted to turn and' carrying two integral gear-wheels adapted to engage the said fast and loose gear-wheels, and means, substantially as described, for locking the shaft to be shifted in position, permitting it, however, to turn, substantially as shown and described.

3. In a boring-machine, the combination, with posts, of a frame mounted to slide on the said posts, a shaft held to turn and adapted to be shifted in the said frame, a bevel gearwheel having clutch-teeth secured on the said shaft, a second bevel gear-wheel held loose on the said shaft and adapted to be engaged by the said first-named bevel gear-wheel,two integral gear-wheels of different diameter and adapted to mesh in the said gear-wheels on the said shaft, and a second shaft held at right angles to the said first-named shaft and carrying the said two integral gear-wheels, sub stantially as shown and described.

4. In a boring-machine, the combination, with posts, of a frame mounted to slide on the said posts, a shaft held to turn and adapted to be shifted in the said frame, a bevel gearwheel having clutch-teeth and secured on the said shaft, a second bevel gear-wheel held loose on the said shaft and adapted to be engaged by the said first-named bevel gearwheel, two integral gear-wheels of different diameter and adapted to mesh in the said gear-wheels on the said shaft, a second shaft held at right angles to the said first-named shaft and carrying the said two integral gearwheels, and a chuck held on the said lastnamed shaft for carrying the auger, substantially as shown and described.

5. In a boring-machine, the combination, with posts, of a frame mounted to slide on the said posts, a shaft held to turn and adapted to be shifted in the said frame, a bevel gear wheel having clutch-teeth and secured 011 the said shaft, a second bevel gear-wheel held loose on the said shaft and adapted to be engaged by the said first-named bevel gearwheel, two integral gear-wheels of different diameter and adapted to mesh in the said gear-wheels on the said shaft, a second shaft held at right angles to the said first-named shaft and carrying the said two integral gearwheels, and latches for alternately locking the first-named shaft in the right or left hand position, permitting the shaft, however, to turn in its bearings on the frame, substantially as shown and described.

6. In a boring-machine, the combination, with posts, of a frame mounted'to slide on the said posts, a shaft held to turn and adapted to be shifted in the said frame, a bevel gearwheel having clutch-teeth and secured on the said shaft, a second bevel gear-wheel held loose 011 the said shaft and adapted to be engaged by the said first-named bevel gearwheel, two integral gear-wheels of different diameter and adapted to mesh in the said gear-Wheels on the said shaft, a second shaft held at right angles to the said first-named shaft and carrying the said two integral gearwheels, and means, substantially as described, for locking the said posts in any desired position, as set forth.

7. In a boring-machine, the combination, with posts, of aframe mounted to slide on the said posts, a shaft held to turn and adapted to be shifted in the said frame, a bevel gearwheel having clutch-teeth and secured on the said shaft, a second bevel gear-wheel held loose on the said shaft and adapted to be engaged by the said first-named bevel gearwheel, two integral gear-wheels of different diameter and adapted to mesh in the said gear-wheels on the said shaft, a second shaft held at right angles to the said first-named shaft and carrying the said two integral gearwheels, an d means, substantially as described,

for quickly raising the said frame on the said posts to withdraw the auger from the drilled hole, substantially as shown and described.

CHARLES H. IRWIN. FRIEDERIOH MILL. JOHN E. HITCH. W'itnesses:

' LEVI MILLs,

HORACE SPRAY. 

